21496140

Names of 21496140

• Cardinal: 21496140 can be written as Twenty-one million, four hundred ninety-six thousand, one hundred forty.

Scientific notation

• Scientific notation: 2.149614 × 10⁷

Factors of 21496140

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 706

Divisors of 21496140

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 307 389 614 778 921 1167 1228 1535 1556 1842 1945 2334 2763 3070 3501 3684 3890 4605 4668 5526 5835 6140 7002 7780 9210 11052 11670 13815 14004 17505 18420 23340 27630 35010 55260 70020 119423 238846 358269 477692 597115 716538 1074807 1194230 1433076 1791345 2149614 2388460 3582690 4299228 5374035 7165380 10748070 21496140
• Sum of all divisors σ(n): 65585520
• Sum of proper divisors (its aliquot sum) s(n): 44089380
• 21496140 is an abundant number, because the sum of its proper divisors (44089380) is greater than itself. Its abundance is 22593240

Bases of 21496140

• Binary: 1010010000000000101001100₂
• Hexadecimal: 0x148014C
• Base-36: CSQJ0

Squares and roots of 21496140

• 21496140 squared (21496140²) is 462084034899600
• 21496140 cubed (21496140³) is 9933023105966687544000
• The square root of 21496140 is 4636.3929945595
• The cube root of 21496140 is 278.0482465477

Scales and comparisons

• 21,496,140 seconds is equal to 35 weeks, 3 days, 19 hours, 9 minutes.
• To count from 1 to 21,496,140 would take you about two days!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21496140 cubic inches would be around 23.2 feet tall.

Recreational maths with 21496140

• 21496140 backwards is 04169412
• The number of decimal digits it has is: 8
• The sum of 21496140's digits is 27
• More coming soon!